Joint for crossing metal bars.



H. HEINZL. JOINT FOR CROSSING METAL BARS.

APPLICATION I'ILED MAR. 21, 1913.

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To all whom it may concern Be it known that I, Hose HEINZL, a subject of the Emperor of Austria-Hungary, residing at Fischer-n, near Carlsbad, Bohemia, Austria-Hungary, have invented a new and Improved Joint for Crossing Metal Bars, of which the following is a specification.

' This invention relates to a joint for crossing metal bars, by means of which the bars are rigidly connected at their point of intersection in a simple manner, without the use of rivets or other outwardly visible fastening means.

The invention is Well adapted for fixing the joint of intersecting metal sash bars, but is equally applicable to metal bars used for other purposes.

In the accompanying drawing: Figure 1 is a perspective view of a joint for metal bars embodying my invention; Fig. 2 a side View of one of the bars; Fig. 3 a side view of the other bar; Fig. 4 a. section on line 4-4, Fig. 5; Fig. 5 a plan; Fig. 6 a section on line 6 6, Fig. 7; Fig. 7 a plan of a modification of the joint, and Fig. 8 a detail of the key pertaining to said modification.

One of the two metal bars, railsor similar members (i to be connected, is provided at the point of intersection with an upper transverse slot 6 which opens at its lower end into a longitudinal slot 0;. The second member cl is provided at its point of intersection with a lower transverse slot f, which opens at its upper end into a longitudinal slot (1. The two members thus constructed, are made to straddle-each other, so that in this way, the upper edges as well as their lower edges will be placed in like horizontal planes, while the longitudinal slots a, a will become horizontally alined .to jointly form a cruciform pocket, Into this pocket, there I is fitted a key I), which is preferably made in the form of a disk, and which is of a size and thickness to snugly engage slots a, a. In order to introduce this key, slot a is laterally extended at one end, and there is provided on the member 03 havin said slot, an integral tongue 0 that extends into the prolonged part of the slot. Tongue 0 is Specification of Letters Patent. Application filed March 21, 1913.

Patented Jan. 13, 1914..

Serial No. 755,858.

prionto the assemblage of the parts, bent sidewise (Fig. 5) and after the key has been seated, it is again bent back into its normal I position to thus lock the key in place.

lVith the construction shown in Figs.

6-8, the slot at islikewise extended along one end, but the tongue c is omitted. In lieu thereof, a tongue 6 is formed on the key I), which, after the'introduction of the key is secured to the corresponding member '60 d by upsetting its edges against opposite faces of said member or in other suitable manner. v

1. A joint of the class described, comprising a pair of straddlin bars having trans-v verse slots and longitudinal slots at the ends of the transverse slots said longitudinal slots forming jointly-a pocket, a lockin member positioned entirely within said. pocket and bounded and maintained in p0 sition by said bars at theends of the pocketforming slots, and means for securing said locking member within said pocket.

2. A joint of the class described, comprising a pair of straddling members,eaeh memher being provided with .a transverse slot and with a longitudinal slot, a disk-shaped key engaging the longitudinal slotsof both members, one of the lonfitudinalslots being extended for the intro notion of said key, and means for locking the key-within the longitudinal slots. I

3. A'joint of the class described, comprising a pair of straddling members, each memher being provided with a transverse slot and with a longitudinal slot openin into the transverse slot, one of the longitudinal slots having an extension, at key engaging the longitudinal slots of both members, and a tongue integral with one of said parts and projecting ,into the longitudinal. slot ex- 1 tension.

In testimony whereof Iafiix my signature in presence of two witnesses.

ANTON Fr'ionn'r, LUDwIe KE'I'INER. 

